Back
Genesis is the first dual action anti-fall haircare range: FOR ALL WOMEN, IN ALL LIFESTYLES, WITH ALL DEGREE OF HAIR FALL.
Powered with a cocktail of highly efficient ingredients to instantly strengthen and thicken the hair fiber for an immediate fuller look with more fiber strength, more fiber retention* and -84% less hair-fall**.
*Clinical study, 99 people, 6 weeks use.
**hair-fall due to breakage. Instrumental test on Bain Nutri-fortifiant + Masque Reconstituant + Ampoule/Sérum Aminexil.
HOW DOES GENESIS WORK?
A double action for your client:
Instantly: PROTECTS AGAINST DAILY EXTERNAL AGGRESSOR AND ANTIOXIDES thanks to Ginger roots and Edelweiss native cells.
Long Term: STOP HAIR-FALL FORTIFIES HAIR ANCHORAGE & RETENTION AND REDUCE HAIR-FALL FROM THE ROOTS thanks to Aminexil.
Sérum Anti-Chute Fortifiant benefits:
- Silicone-free.
- Strengthens hair day after day.
- 97% less hair fall due to breakage from brushing*.
*System of Bain Hydra-Fortifiant + Fondant Renforcateur + Sérum Fortifiant vs Non-Conditioning Shampoo.
WHO IS IT FOR?
Genesis targets every woman with hair fall need that would efficient, convenient and peasurable with :
- Instant result of hair care
- Efficacy of anti hair fall solutions
Activate scalp with the Serum Anti-Chute Fortifiant.
Use once daily in the morning or before going to bed during a 6-week period :
Step 1: Take 1 pipette until the mark.
Step 2: Apply 3 drops by section and repeat on the whole scalp with 4 doses.
Step 3: Massage gently, do not rinse.
Learn more on Access
Ask more information about this productGenesis Sérum Anti-Chute Fortifiant is enriched with GINGER ROOT, EDELWEISS NATIVE CELLS and AMINEXIL.
GINGER ROOTS: Known for its ability to protect against daily external aggressors.
EDELWEISS NATIVE CELLS: Capable to resist the most extreme conditions and is known in skincare for its antioxidants. It also has power & collagen-preserving properties.
AMINEXIL: Helps hair to anchor more solidly into the scalp & prevents collagen from hardening around hair follicles to reduce hair-fall from the roots.
Rating & Reviews
Aaaa11
51.753722662E12 28/07/2025
The result was wow
Amazing products and you can tell the result within a week
Originaly posted on kerastase.ca
ClaudiaP12
51.753122608E12 21/07/2025
Excellent
[This review was collected as part of a promotion.] Really good results . I applied every morning before star
Originaly posted on kerastase-usa.com
Jennifer2321
51.753075804E12 21/07/2025
It’s working!
[This review was collected as part of a promotion.] Been using it for a month and I’m ready for my next bottle!
Originaly posted on kerastase-usa.com
Phenomenal
51.753068604E12 20/07/2025
Incredible product!
[This review was collected as part of a promotion.] As soon as this serum touches my scalp it feels relaxing and xtremely soothing!! I'm on day 2 and I already feel a difference!! Just WOW!!! LOVE IT!!
Originaly posted on kerastase-usa.com
Sophie SSS
51.753063204E12 20/07/2025
Like it!
[This review was collected as part of a promotion.] I really do like this! will purchase again probably!
Originaly posted on kerastase-usa.com
ahobbs276
51.753052404E12 20/07/2025
Love Love
[This review was collected as part of a promotion.] Such a light weight formula, I’ve noticed such a difference in my hair fall out.
Originaly posted on kerastase-usa.com
Abby Geye
51.753044309E12 20/07/2025
Love this stuff.
I’ve almost finished my first bottle and I’ve noticed a difference in the amount of shedding already! It doesn’t leave your hair greasy like a lot of other serums.
Originaly posted on kerastase-usa.com
Palomaduarte
51.753044309E12 20/07/2025
Really works!
[This review was collected as part of a promotion.] The hype is real! I'm on my second bottle and have noticed difference in my hair. The smell is amazing!
Originaly posted on kerastase-usa.com
Mary456
51.753002008E12 20/07/2025
The best of all
Smell like heaven! Although I just started usung the serum, I can see the difference and every time enjoying the magical smell!
Originaly posted on kerastase-usa.com
ali2006
51.75299571E12 20/07/2025
LOVE MY HAIR FEELS GREAT
[This review was collected as part of a promotion.] i bought this because my hair is lowkey wrecked and it has been making my scalp feel fresh and clean while also helping my hair grow. this with the resistance serum has been my holy grail
Originaly posted on kerastase-usa.com
Alyssa B
51.752951605E12 19/07/2025
✨ Kérastase Genesis Serum Review ✨
This is my second time purchasing the Kérastase Genesis Serum and I had to stock up with a few bottles during their sale because this product is quite literally magic in a bottle! My hair feels stronger, my scalp is healthier, and I’ve noticed way less shedding and breakage—it really works! If you’re experiencing a lot of breakage and/or shedding, please try this product! You will not regret it!
Originaly posted on kerastase-usa.com
AveryL
51.752947107E12 19/07/2025
Doesn’t leave my hair greasy
Too soon to see results but it smells nice and doesn’t leave my hair greasy which is a big plus! Excited to keep using it and see results
Originaly posted on kerastase-usa.com
Daph987
51.752975904E12 19/07/2025
Amazing
[This review was collected as part of a promotion.] So far seems to be working great but it’s only been like 3weeks so we’ll see
Originaly posted on kerastase-usa.com
MrsOlson
51.752975904E12 19/07/2025
Really works
I use this every day on my scalp on damp hair, before heat styling. There is a noticeable decrease in shedding when I wash my hair.
Originaly posted on kerastase-usa.com
Tara CL
51.752885003E12 18/07/2025
Results.
Have not seen any type of results yet. It’s very drippy
Originaly posted on kerastase-usa.com
303stef
51.752939914E12 19/07/2025
Great product
[This review was collected as part of a promotion.] Great. It makes my hair more controlled and not so frizzy. Feel strong less damaged.
Originaly posted on kerastase-usa.com
Britney i
51.752844507E12 18/07/2025
Great purchase !
In love with the results so far! About to repurchase
Originaly posted on kerastase-usa.com
Kariless
51.752789604E12 17/07/2025
Amazing
[This review was collected as part of a promotion.] I notice the difference in the first application. I will be ordering more
Originaly posted on kerastase-usa.com
Trishyymarie
51.75275451E12 17/07/2025
I mean WOW
I’m a hair stylist, my hair was shedding so much for some reason and it was very dry. I started using this every night before I went to bed and massaged it in my scalp and put the overnight oil on my end. It has made a huge difference in my hair! My hair is not only strong, but so healthy.
Originaly posted on kerastase-usa.com
Jordan H
51.752696019E12 16/07/2025
Great product!
I've only been using this for about 2 weeks now, but I can honestly say this is one of my favorite hair products. I notice I don't shed nearly as much while washing my hair in the shower! I have fine hair, but I have a lot of it. I highly recommend this product to anyone who wears their hair up a lot.
Originaly posted on kerastase-usa.com
Lhenson46
51.75270232E12 16/07/2025
Smells incredible
[This review was collected as part of a promotion.] It made my hair so soft I’m looking forward to seeing if it helps with hair loss.
Originaly posted on kerastase-usa.com
KenzieT
51.752693309E12 16/07/2025
Breakage Fighter in a Bottle
[This review was collected as part of a promotion.] This has become a must in my routine. It’s super lightweight and doesn’t make my roots greasy. I use it on damp hair, and over a few weeks, I’ve seen less shedding in the shower and less breakage when brushing. Perfect for targeting fragile strands.
Originaly posted on kerastase-usa.com
TatianaD
51.752712204E12 16/07/2025
Impressed
My hair is definitely growing better. I am experiencing less hair loss. Highly recommending!
Originaly posted on kerastase-usa.com
rmartini
51.752675325E12 16/07/2025
Light Hair Serum
Half way through my first bottle and liking it so far! Doesn't leave my hair feeling greasy.. smells good too!
Originaly posted on kerastase-usa.com
Idkwhat
51.752634803E12 15/07/2025
So good
This product smells so good and also helped my hair get better and prevented it from falling out as much,definitely recommend!!
Originaly posted on kerastase-usa.com
Gatita
51.752618604E12 15/07/2025
El mejor producto
[This review was collected as part of a promotion.] Lo amo, es el mejor producto que he probado desde el momento que empecé a usarlo, pude ver la diferencia en mi cabello
Originaly posted on kerastase-usa.com
Anna31
51.752615006E12 15/07/2025
Textuta
Me encanta la textura de este producto, lo aplico en las noschea y al día siguiente mi pelo quedó fantástico y el olor es increíble
Originaly posted on kerastase-usa.com
Naviii
31.753282886E12 23/07/2025
It’s okay
I’ve been using this for 4 months now, it really hasn’t done a whole lot of anything. My hair sheds at the same rate and still is very easily breakable. Kind of a waste of money if you’d ask me.
Originaly posted on kerastase-usa.com
Reply from Consumer Care Center
Hi Naviii, thank you for reaching out about Genesis Serum Fortifiant Hair Serum. We are sorry to hear you did not get the results you had expected with this serum. We recommend trying our Initialiste Scalp & Hair Serum. This is an advanced scalp and hair serum that strengthens hair fibers and reduces hair breakage by restoring uniformity and smoothness. We hope you give it a try!
Bellasima
41.752594311E12 15/07/2025
Stop my hairloss
This is the second bottle I used . My hair has not been fallinh off as much. OK
Originaly posted on kerastase-usa.com
Ada Mercado
51.752597009E12 15/07/2025
Love this
This product makes a huge difference when I put 30 min before washing my hair , it leaves hair and scalp healthy
Originaly posted on kerastase-usa.com
Sydney H
51.752600607E12 15/07/2025
Smells great, non greasy
Haven’t used it long enough yet to know if it truly helps with hair growth, but it makes my hair soft and is non greasy. I love it so far!
Originaly posted on kerastase-usa.com
Justice23
51.752516007E12 14/07/2025
Game-Changer for Weak, Thinning Hair!
[This review was collected as part of a promotion.] I’ve been using the Genesis Serum Fortifiant consistently for the past few weeks, and the difference in my hair is incredible. My hair was feeling weak, shedding more than usual, and looking flat—but this serum has brought it back to life.
It’s lightweight, non-greasy, and absorbs quickly into the scalp without leaving any residue. I love that it doesn’t weigh my hair down or make it feel oily like some other serums do. After regular use, I’ve noticed less breakage, stronger roots, and even a boost in volume.
The scent is also super luxurious—clean, subtle, and salon-like. It truly feels like self-care in a bottle.
Highly recommend for anyone dealing with hair fall or thinning. Stick with it—consistency is key—and your hair will thank you!
Originaly posted on kerastase-usa.com
Star234
31.753722673E12 28/07/2025
Strong smell, bottle only lasts 2 weeks
Smells incredibly strong and unpleasant. I've gotten used to the smell now but I don't enjoy it. A bottle lasts about 2 weeks if you use as directed. I've been using it a month now and haven't seen any improvement to my hair. Will continue using to give it a fair chance.
Originaly posted on kerastase.ca
Reply from BEC
Thank you for trying our Genesis Anti-Breakage Fortifying Serum. We are sorry to hear that you are not seeing improvements yet with the product. We truly appreciate your feedback and will share it with our dedicated team for product formulation. We invite you to contact us on our website and Chat with a Hair Specialist so they can assist you with your purchase or with choosing a product that would better suit your needs. We want to help in the best way we can. We look forward to hearing from you!
Yuli30
31.753214832E12 22/07/2025
Smells amazing!
It is too early to tell if it works, but smells AMAZING!! Product consistency is extremely watery and hard to apply only to roots, easy fix when you use a plush headband. It does run to the lengths of the hair, however, it leaves my hair really soft! I give 3 stars because of the price and the quantity you have too apply, this is too expensive, but I’ll give it a try for a couple of months!
Originaly posted on kerastase-usa.com
Reply from Consumer Care Center
Hi Yuli30! We are happy to hear that you liked our Genesis Serum Fortifiant Hair Serum. We appreciate you taking the time to reach out and share your experience with us. We love hearing from you and hope you continue to explore our products with complete confidence!
Maya w
51.752379227E12 13/07/2025
I noticed my hair growing within a few weeks, so m
I noticed my hair growing within a few weeks, so much stronger!!
Originaly posted on kerastase-usa.com
Silky Stands
51.752381903E12 13/07/2025
Total Game Changer for My Hair
I absolutely loved this! It’s by far the best thing I’ve used on my hair lightweight, not oily, and leaves zero residue. It made my hair feel so soft and healthy without weighing it down. And the smell is amazing! I’m seriously impressed. Highly recommend!
Originaly posted on kerastase-usa.com
Mrico100
51.752362104E12 12/07/2025
Don’t hesitate
I’ve been using the Kérastase Genesis serum for a while now, mostly out of frustration with persistent hair loss. Honestly, this oil has been a quiet game-changer for me. I remember those days when I’d see clumps of hair in my brush—now, there’s a noticeable reduction.
The texture is just right: it’s light, non-greasy, and actually feels like a treat when I run it through my hair. I’ve noticed not only less shedding but also an overall healthier look and feel to my hair. It’s become a staple in my personal care routine, and I genuinely feel more confident about my hair.
If you’re dealing with similar issues, I’d say give it a try. It’s been a personal win for me
Originaly posted on kerastase-usa.com
Crgray
41.752330608E12 12/07/2025
Wonderful but…
Ok. So I am really liking this product so far. I have only been using it for two weeks…not long enough to know how well it works. But be careful with the applicator. While squeezing the little applicator and massaging it into my scalp, it slipped out of my slippery fingers and fell into the sink and the glass tube shattered. I thought it was all contained in the sink. But two days later (we were on vacation) my husband mentioned that he’d had something in his foot for two days that was killing him. After digging with my eyebrow tweezers, we dug out the tiny round glass tip of the little tube. Now I’m stuck with how yo get the rest of the product out of the bottle and on my hair. That being said, it smells wonderful and does not leave your hair greasy. I hope it works with my hair fallage.
Originaly posted on kerastase-usa.com
Mariat005
51.752309909E12 12/07/2025
Love love love
I loveeee this serum, send bottle and I can’t get enough of it, recommend 10/10
Originaly posted on kerastase-usa.com
Jayson
11.752849677E12 18/07/2025
Don't buy
Formula has changed a lot went from a thick jelly consistency to a watery even the actual formula changed ... the old one had aminexile and now it doesn't will NOT be repurchasing again !!!
Originaly posted on kerastase-usa.com
Reply from Consumer Care Center
Hi there, Thanks for your feedback. We're so sorry to hear about your experience with Genesis Serum Fortifiant. We'd like to collect more information and find a solution. Please give us a call at 877-748-8357 Monday to Friday: 9:00 am to 5:30 pm. EST and provide case #41935910. We look forward to speaking with you.
Poojaa
51.752203704E12 10/07/2025
Hairfall has reduced
It really works!!!!!! My postpartum hairfall reduced!!
Originaly posted on kerastase-usa.com
Cali C
51.752163208E12 10/07/2025
Best hair serum for fallout
This is a really great product!! I recommend being consistent.
Originaly posted on kerastase-usa.com
Lowporositygirly
51.752183009E12 10/07/2025
Amazin!
[This review was collected as part of a promotion.] It's great for straight fine low porosity hair! It's extremely light weight, similar texture to water but a bit more thick. It's refreshing to apply on my hair. For reference I have pcos and andogenetic alopecia and this doesnt irritate my scalp. I havnt seen hair growth but I see less breakage so Im already on my second bottle. Not a huge miracle product but I like the progress and light weight serum very much!
Originaly posted on kerastase-usa.com
Patsie
51.752163208E12 10/07/2025
You Need This!!
This has helped my scalp so much. Definitely a future repurchase. Also smells nice.
Originaly posted on kerastase-usa.com
SweetG
51.752083108E12 09/07/2025
Feels Great
Feels great on your scalp!! Smells wonderful!! It doesn't make your hair greasy
Originaly posted on kerastase-usa.com
Reetika
41.752043506E12 09/07/2025
Helped my hair so much!
Helped improve my hair, so much softer and hydrated after using for a month
Originaly posted on kerastase-usa.com
Jasmine2025
51.752036304E12 09/07/2025
stop the breakage and add length
Non-oily perfect addition to your hair routine at night
Originaly posted on kerastase-usa.com
Bescruceria
51.752074108E12 09/07/2025
the best product in life
[This review was collected as part of a promotion.] It has been one of the best products I have tried. It has stopped my hair loss and it has grown much more beautiful and leaves a spectacular smell.
Originaly posted on kerastase-usa.com
CrystalPena20
51.752075907E12 09/07/2025
Great product
[This review was collected as part of a promotion.] I have not been using this for long and I can already see a difference. We shall see how I feel about it long-term, but so far so good.
Originaly posted on kerastase-usa.com
Britt G
41.752075907E12 09/07/2025
Great product with a few minor reservations
Doesn’t make my hair greasy. Has slowed down the amount of shedding I am experiencing. The fragrance is quite strong so might be off putting to some. The instructions say to use 4 pipettes each application but I find that to be too much and would go through the bottle too quickly. I use 1-2 pipettes each application.
Originaly posted on kerastase-usa.com
BAM267
51.752075907E12 09/07/2025
Love!
I am loving this serum! I have truly noticed a difference in my hair growing back after using for 6 months.
Originaly posted on kerastase-usa.com
Helen V
51.752075907E12 09/07/2025
Genesis Serum Fortifiant Hair Serum
I’ve only used this for about a month. I am a natural brunette and have highlights, and I can absolutely see the new hair growth coming in. Did not expect for it to come in this fast!
Originaly posted on kerastase-usa.com
Anonymous
51.752682245E12 16/07/2025
Producto estrella
Es mi producto estrella dentro de mi rutina capilar. lo amo y siempre esta en mi estanteria. 100% recomendado. lo amaran tambien
Originaly posted on kerastase-usa.com
kate gogoladze
51.75198412E12 08/07/2025
After using it, my hair feels incredibly soft!!!!
it’s perfect for the hair I truly recommend it!!!!!!!!
Originaly posted on kerastase-usa.com
Celosia
51.751958906E12 08/07/2025
Looks promising!
Too soon to tell any results, smells very floral and feel refreshing!
Originaly posted on kerastase-usa.com
jessss
51.751985908E12 08/07/2025
amazing
[This review was collected as part of a promotion.] love it so much only thing that actually helps my hair
Originaly posted on kerastase-usa.com
Yarleen
51.751904011E12 07/07/2025
The best serum I ever had!
I love the smell and it really works with the strength of your hair
Originaly posted on kerastase-usa.com
Lisa HU
41.751903126E12 07/07/2025
Nice Scent
I like the scent of this serum although it is a bit heavy. I am not sure if I have seen much results yet as it is only my second bottle but I at least feel I am doing something for my scalp health. I have noticed some baby hairs getting longer.
Originaly posted on kerastase-usa.com
froggy
51.751901309E12 07/07/2025
Magic in a bottle
I know everyone writes “magic in a bottle” about products they enjoy these days but this is the real deal. I have long but very damaged hair that was stuck at the same length for months, plus a small thin patch on my left side of my hair and this product has helped me fix both. Not to mention that it smells great and doesn’t leave your hair feeling weighed down and sticky like normal hair oils and serums do. I’ve already purchased my 2nd bottle and I’ll be a forever loyal customer as long as the formula stays the same.
Originaly posted on kerastase-usa.com
Mary Gee
51.751985908E12 08/07/2025
Ms
[This review was collected as part of a promotion.] I could not live without this serum !!! My hair has been the longest, thickest it’s ever been !
Originaly posted on kerastase-usa.com
PamelaLynne
51.751893213E12 07/07/2025
Holy Grail
[This review was collected as part of a promotion.] I just purchased my 3rd bottle of this and in fact have now signed up for auto ship. I’m 50 and starting experiencing some hormonal hair loss. I have tried many scalp products but none have helped hair fall like this product! I also have so many new baby hairs around my hair line! The product quickly absorbs and I have no oiliness of my scalp using this product.
Originaly posted on kerastase-usa.com
Anonymous
51.751838305E12 06/07/2025
Great product!
I love this serum, it helps me a lot. I’m buying my third bottle at this moment. Highly recommended
Originaly posted on kerastase-usa.com
Ash164
51.751832906E12 06/07/2025
Great!
Feels very refreshing on my scalp, it is very watery but it’s nice to use. I haven’t seen too many affects yet but I haven’t had it that long. I also spilled a good chunk of the bottle which may hinder my results of now doing it for the full time but I would repurchase!
Originaly posted on kerastase-usa.com
SOC1988
51.751850006E12 06/07/2025
Strong Roots
I’ve been using this serum for about 9 months and my roots looks healthy and strong. If your scalp is irritated don’t use it.
Originaly posted on kerastase-usa.com
Sweetheart
51.751850006E12 06/07/2025
Light hair serum
Will reorder, seems like helping with making my hair strong
Originaly posted on kerastase-usa.com
amyyyyyyy
41.751850006E12 06/07/2025
Helpful!
It has a very strong fragrance which took a few uses to get used to but then it was fine! I’ve noticed some growth in my hair, I’m definitely going to buy again to see if it will continue to help.
Originaly posted on kerastase-usa.com
Anonymous
51.751850006E12 06/07/2025
Love it!!
I use it every single night and I can tell you been consistent with your routine you’ll see the results
Originaly posted on kerastase-usa.com
Shay45
51.751726707E12 05/07/2025
Works!
I notice that i get less hair fall with this and it smells really good. I'm trying to grow my hair out which is why I started using it. I was worried it would be oily but it actually is extremely light weight which is great because my scalp stays on the oilier side. Would recommend.
Originaly posted on kerastase-usa.com
Gigi16
51.75173661E12 05/07/2025
Strong and beautiful hair now!
[This review was collected as part of a promotion.] I’m completely obsessed with this serum! My hair is totally different now! And I love the results!
Originaly posted on kerastase-usa.com
Yolihomes
51.751685303E12 04/07/2025
Super efectivo
[This review was collected as part of a promotion.] Veo desde la 3era semana crecimiento nuevo, lo recomiendo.
Originaly posted on kerastase-usa.com
Slyther
51.75173661E12 05/07/2025
Helped with baby hairs
[This review was collected as part of a promotion.] Helps with breakage and overall notice hairs re growing
Originaly posted on kerastase-usa.com
Lillly
51.751758207E12 05/07/2025
Best hair serum for hair loss
[This review was collected as part of a promotion.] I have been using this product for over 3 weeks and I definitely seen less hair fall since I started using this product, worth the money!
Originaly posted on kerastase-usa.com
Evapoda
51.751648409E12 04/07/2025
Must have
[This review was collected as part of a promotion.] I really love the smell, still waiting to see results 🤩
Originaly posted on kerastase-usa.com
Finlahy
51.751804107E12 06/07/2025
instantly smoothing
For anyone seeking to reinforce weakened hair and enhance its natural glow, this serum is a refined, effective must-have.
Originaly posted on kerastase-usa.com
Nattinat
51.751637627E12 04/07/2025
Love it
Very light, using it everyday and my hair feels stronger and healthier
Originaly posted on kerastase-usa.com
Elly k
11.752255838E12 11/07/2025
Bad headaches from the product
Horrible headache ever since I started using this product. Not sure what’s in it but my scalp is repelling the ingredients and I could not sleep for the life of me.
Originaly posted on kerastase-usa.com
Reply from Consumer Care Center
Hi there, We are sorry to hear about the experience you had with Genesis Serum Fortifiant Hair Serum. We would like to speak with you directly about it. Please give us a call at 877-748-8357 Monday to Friday: 9:00 am to 5:30 pm. EST for assistance and provide the case #41858991. Looking forward to speaking with you. It would be helpful if you could have the product available when you call.
Kg84lv
51.751572806E12 03/07/2025
Life Saver
This product is amazing!! I was crying in the shower looking at how much hair I was losing, this product saved my hair and gave me peace of mind
Originaly posted on kerastase-usa.com
Michelle otero
51.751562008E12 03/07/2025
Super lightweight
I love love this hair serum! I’m on my second bottle right now! It does not feel heavy or greasy on the hair at all. I use it every night and can see the results already.
Originaly posted on kerastase-usa.com
Anonymous
51.751698809E12 05/07/2025
Best hair serum
[This review was collected as part of a promotion.] Genesis serum is the best one I have tried ever, I love it!
Originaly posted on kerastase-usa.com
Oumama
51.751562008E12 03/07/2025
Miracle
This is a miracle I’m 37 I always have a very thin hair and I was struggling with breakage and this product ready changed my life
Originaly posted on kerastase-usa.com
Monday
11.752249439E12 11/07/2025
Overhyped
[This review was collected as part of a promotion.] It’s very water like it runs through my hair fast. It finished very quickly, lasted 2 weeks and I have not noticed any difference. Scent is strong so wouldn’t recommend if you’re sensitive to smell.
Originaly posted on kerastase-usa.com
Reply from Consumer Care Center
Hi there, Thanks for your feedback on Genesis Serum Fortifiant. We're so sorry to hear about your experience. We'd like to collect more information and find a solution. Please give us a call at 877-748-8357 Monday to Friday: 9:00 am to 5:30 pm. EST and provide case #41849771. We look forward to speaking with you.
Anonymous
51.751480111E12 02/07/2025
Genesis is amazing!
Great product! I love the consistency....and the smell!!!!
Originaly posted on kerastase-usa.com
DRLuna
41.751480111E12 02/07/2025
Pretty Good Product
[This review was collected as part of a promotion.] I've been using this product for a few months now. I haven't seen much hair growth but have seen less hair shedding. At first the scent was a little too much, but I moved passed it. Now I don't even notice the scent. I will continue to use this product for a few more months to see if it does in fact promote hair growth.
Originaly posted on kerastase-usa.com
Kamomi
51.751584507E12 03/07/2025
Serum
[This review was collected as part of a promotion.] I’m using this to grow out my baby hairs on my hairline. I’m halfway through the bottle and I already see a difference!
Originaly posted on kerastase-usa.com
Greta25
51.751482807E12 02/07/2025
Love the size and ease of use
Have seen results quickly and love the bottle size and dropper quality.
Originaly posted on kerastase-usa.com
SusannJust
51.751584507E12 03/07/2025
Love this serum!
This serum have keep my scalp so heathy and allow my hair to grow!
Originaly posted on kerastase-usa.com
Morena15
51.751587203E12 03/07/2025
CAN NOT LIVE WITHOUT THIS PRODUCT
[This review was collected as part of a promotion.] This product is amazing it save my hair, I was losing hair and I used this everyday faithfully the best product on the market.
Originaly posted on kerastase-usa.com
Anny f
51.751473807E12 02/07/2025
🫶🏻
[This review was collected as part of a promotion.] Me gusta mucho no deja grasoso el cabello y me ayuda a la caída
Originaly posted on kerastase-usa.com
orange county
21.752175851E12 10/07/2025
Did not work for me
Bought this Friday 6/27 and I have been using it daily for almost a week.
I wash my hair 5-6x a week and have been doing so my whole life basically. I bought this because I noticed my hair started shedding more.
The Saturday I did not wash my hair and my hair was shedding a lot while brushing. Sunday my hair shedding was double what it normally is. I thought maybe it was because my scalp was super sweaty. But I used it for 3 more days and the shedding was more than what it is daily without this serum. For me personally it did not work, it made me shed more. I was optimistic it would help reduce my hair shedding but it didn't work for me, it made me shed more. So after 5 days I decided to stop it. So on the hunt for another serum.
Originaly posted on kerastase-usa.com
Reply from Consumer Care Center
Hi orange county! We are very sorry to hear about the experience you had with our Genesis Serum Fortifiant Hair Serum. We would like to speak with you directly about it. Please give us a call at 1-877-254-9949 Monday-Friday, 9am to 6pm ET for assistance and provide the reference #41842797. Looking forward to speaking with you. It would be helpful if you could have the product when you call.
Mreilly1
51.751583604E12 03/07/2025
Works great!
[This review was collected as part of a promotion.] Great serum! Really helped my hair begin to grow. I can tell it’s working because I have a ton of baby hairs on my hairline!
Originaly posted on kerastase-usa.com
Adele A
51.751614211E12 04/07/2025
YOUR HAIR IS WORTH IT (and more)
I found the Genesis Hair Serum while deep-diving through TikTok for hair fall prevention—especially as someone dealing with postpartum hair loss. So many girlies recommended it, and I’m genuinely so thankful they did!
Yes, it’s definitely a bit pricey, but with consistent use, the results speak for themselves. It made a huge difference in my shedding, and I started noticing stronger, healthier hair over time. As a new mom, that kind of progress is priceless.
It might hurt my pockets a little… but honestly, I’d rather have a full head of hair than regret not doing something about it. 100% worth it! 😍 Ladies get it I’m telling you! 2025 no more hair fall let’s go 💪🏼
Originaly posted on kerastase-usa.com
Jana Deaibes
51.751403605E12 01/07/2025
MAGIC BOTTLE
Everyone talks about this!! For a reason!! But now I understand why.
Originaly posted on kerastase-usa.com
OliverTwistedsMom
31.752088628E12 09/07/2025
Scent triggers migraines
Unfortunately I won't likely know if the product works or nor because of how overly scented it is. It would be appreciated if it was unscented as the smell triggers instant migraines. I'm not sure why manufacturers feel the need to scentify (yes, I made it up) everything, failing to take into consideration that I'm not the only one who cannot use these products. Maybe it is something in the ingredient(s) itself that is naturally scented, but if not, please stop scenting your products.
Originaly posted on kerastase-usa.com
Reply from Consumer Care Center
Hi OliverTwistedsMom! We are very sorry to hear about the experience you had with our Genesis Serum Fortifiant Hair Serum. We would like to speak with you directly about it. Please give us a call at 1-877-254-9949 Monday-Friday, 9am to 6pm ET for assistance and provide the reference #41829668. Looking forward to speaking with you. It would be helpful if you could have the product when you call.
Cnleem
51.751389208E12 01/07/2025
Big difference quickly
Noticed a difference after only 2 days, I was really struggling with dryness in my hair so I did an overhaul of all of my hair care and this has been great
Originaly posted on kerastase-usa.com
Vira M
51.75137751E12 01/07/2025
nice
Love this product ! i`m on my 4th bottle and planning to continue use it
Originaly posted on kerastase-usa.com
Probie
51.751389208E12 01/07/2025
So far so good
[This review was collected as part of a promotion.] Just started using, but great smell and doesn’t make my hair oily, so far so good.
Originaly posted on kerastase-usa.com
Layoha
51.751311806E12 30/06/2025
Amazing for hair fall
[This review was collected as part of a promotion.] I’ve seen a noticeable difference in my hair since using the Kérastase Genesis Serum Fortifiant. It’s lightweight, smells great, and has helped reduce shedding significantly. My scalp feels healthier and my hair stronger. Highly recommend for anyone dealing with hair fall!
Originaly posted on kerastase-usa.com
Mandy29
51.751295609E12 30/06/2025
Prevents Hair Fallout
There has been a significant decrease in the amount of hair fallout i experience. This product has become a holy grail item. Will be repurchasing.
Originaly posted on kerastase-usa.com
Merylou
51.751297408E12 30/06/2025
Strength
I started using 2 weeks ago and so far so good! I can see less breakage specially when I brush my hair.
Originaly posted on kerastase-usa.com
Christine Mc
51.751295609E12 30/06/2025
Noticable difference
[This review was collected as part of a promotion.] I've seen a big difference, so much so that I have to color my hair more often bc the new hair growth is so consistent.
Originaly posted on kerastase-usa.com
Anti-Breakage Fortifying Hair Serum 90ml
Kerastase - Genesis
Daily anti hair-fall fortifying serum for weakened hair, prone to falling. The serum improves hair resistance to minimize hair-fall and maximize beautiful hair.
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1 (877) 625-4735 